Visible crew/equipment: When the "militia" guy fires the MP5 at the mannequin, after the last closeup of that mannequin it then cuts to a long shot facing the militia members, Gibbs, and Stone, and two crew members (one in shorts and the other wearing jeans) are visible at the top right side of the screen. (00:38:15)
Visible crew/equipment: When Tony tries to buy the sword for $500 the saleswoman walks away, and as he agrees to $600 in a following shot, the blue T-mark is visible on the floor. (00:23:10)
Marine Down - S1-E9
Visible crew/equipment: In the final scene, the camera, crew and light panels are briefly captured reflected in the door of the silver sports car when Gibbs gets in. (00:43:00)
Visible crew/equipment: In one of the first episodes (2nd or 3rd) of Season 1, in an interrogation room scene, the camera pans around the table, and a crew member is visible in the far wall mirror, standing beside the camera in front of Gibbs.
Visible crew/equipment: After Gibbs has Caitlin hydrate herself Caitlin asks the COB to show her to the Commander's facilities, and as Gibbs exits the Wardroom, the two T-marks are visible on the floor where Caitlin and the COB had been standing. (00:27:10)
Visible crew/equipment: When Agent Fornell follows Gibbs for a private chat (in the elevator) there's an overhead long shot of Caitlin, Tony, and Fornell's two agents. It then cuts to a shot facing Caitlin, and we can see the white mat taped to the floor with black tape (which was not in the previous shot), at the bottom of the screen. (00:22:50)
Visible crew/equipment: When Tony open the van's back door to show Abe's "daughter" the weapons they are alone, with Gibbs taking their photos from across the road. There's a closeup of the case of LAWs, and in the next shot a crew member (looking at the actors) is visible at the left side of the screen, standing directly behind them (she's in this shot only). (00:16:10)
Visible crew/equipment: When Caitlin refers to Gibbs as a Gloomy Gus it then cuts to Tony with Abby, and in the following shot facing the glass doors, the reflection of the camera and its operator are visible as they move toward the left of the screen. (00:14:05)
Visible crew/equipment: When it's discovered the M60s don't have firing pins Gibbs is pushed toward the green doors, and in the first closeup facing Gibbs the blue crash mat is visible at the bottom of the screen. (00:39:50)
The Truth Is Out There - S1-E17
Visible crew/equipment: During the joint interrogation of all four POS, in at least three shots facing the one-way mirror the reflections of the camera, the camera operator, and another crew member can be seen on that mirror. One example is when Gibbs tells Wong that the tape isn't his. (00:40:00)
Marine Down - S1-E9
Visible crew/equipment: After Gibbs meets with the real Colonel Walsh, when he's back at NCIS Gibbs asks for Morrow's help to gain access to records, and in the overhead shot a crew member's leg (wearing jeans and a sneaker) is visible on the left side of the screen, directly behind Morrow. (00:11:50)
Visible crew/equipment: When Nasser is brought to the interrogation room he raises his handcuffed arms and Gibbs nods no to removing them. In the next closeup of Nasser's handcuffs we can see the black taped mat on the floor (also visible in a following shot) which doesn't exist in overhead shots, then as the camera tilts up the reflection of the camera operator (wearing shorts) and camera are visible in the mirror. (00:16:30)
Visible crew/equipment: While Caitlin and Jane Doe are talking about blueberries it cuts to the doctor telling Gibbs that he can't release Jane Doe, and at the start of the next shot the pink T-mark is visible on the floor in front of Gibbs. (00:13:10)
Visible crew/equipment: While Gibbs and Caitlin are alone with Lt. Roberts trying to gain access to the Armed Forces Registry, just as Roberts acknowledges the critical 48 hours, the reflection of a crew member (presumably camera operator) is visible in the mirror, on the right side of the screen. (00:22:20)
Visible crew/equipment: After Abby tells Tony that he's "like a piercing, it takes awhile for the throbbing to stop..." as Gibbs asks her about the theory, the reflection of a crew member wearing a white short-sleeve shirt is visible on the glass. (00:19:40)
Yankee White - S1-E1
Visible crew/equipment: When Gibbs is talking to Kate about the "Harrison Ford movie" noting the terrorists were reporters, just as Gibbs mentions the Secret Service turncoat, the white T-mark is visible on the floor. (00:33:25)
Yankee White - S1-E1
Visible crew/equipment: When Kate is standing over the commander just before they take off, a red tape marker is visible between her feet. (00:09:45)
Visible crew/equipment: When Gibbs tells Abby to run the print through the military database a tape marker is visible by his feet. (00:09:40)
Bete Noire - S1-E16
Visible crew/equipment: When Gerald starts to open the body bag, the film crew are reflected in the fridge door behind him. They are blurry but distinguishable by the fact the shapes move when no-one else does. (00:01:05)
Visible crew/equipment: When Tony stands up and walks over to Kate at the start, a blue tape marker is visible on the floor from where he starts walking. (00:01:35)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.